durlag's tower

i'm in the tower and i've finished all of my foes and was expecting to be transported to the chess game. however, no transport! i double checked and i do have the most recent version of patch, even re did it just in case i didn't do it right. can someone tell me why this is happening?

I assume you fought "Fire" the last? Remember that you must kill the Archer before she fires her arrow, This is written on a mask in the main hallway. Make sure you waste ALL the Phoenix Guards too.

If this doesn't work, try defeating another room as the last one. This might help. I must admit that this one of the strangest (and most confusing) part of the game. I hope this is of any help. If not, please ask again.

Petrarcus ap Bhaal.

Another thought: the are a lot of invisible stalkers in the air room, you'll have to kill all of them, too.